Spark-arrester.



S..'H. WJLVANY; SPARK ARBESTER. wucmou FILED JULY 3'. 191 5.

Patented Mar. 28,1916

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SAMUEL H. MUL'VANY, F WAMIQ, ORE GUN.

SPARK-ARRESTEB.

Specification of Letters Patent. patgnted 28 191g,

Application filed July 3, 1915. Segial No. 37,966.

To all whom iamay concern:

Be it known that I, SAMUEL H. ll iuiivanr, a. citizen of the UnitedStates, residing at \Vamic, in the county of YVasco, State of Oregon,have. invented certain new and useful Improvements in Spark-Arresters;and

' I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in anapparatus of the above nature that will eflectually prevent the escapeof live or hot Y cinders from the stack, and.- thus eliminate all.danger of fire arising from such cinders falling upon buildings, sheds,or other inflammable materials, lyingin the vicinity 1 ;of or adjoiningthe stack.

The invention, generally speaking, comprises'a plurality of deflectingmembers arranged within the stack and adapted to turn the cinders andproducts of combustion .downward, means being provided for returningsaid cinders and products of com bustion back into the ash-pit orfire-box.

The invention further consists in the adjustable mounting of saiddeflecting me1nbers, means being provided whereby they may be readilyoperated to regulate the passage of the cinders and products ofcombustion through the stack.

With the above and other objects of similat-"nature in view, 1 theinvention further consists in the construction, combination andarrangement of parts set forth in and falling within the scope of theappended claim.

In the drawings: Figure 1 is a sectional I view of the invention appliedto a boiler of conventional type. .Fig. 2 is a perspective view of thearrester removed from'the smoke stack, and with the housing partiallybroken.

away, Fig. 3 is a horizontal sectional view taken on the line 3+3 ofFig. 1, and Fig. 4 is an enlarged fragmentary view of the device showingthe manner in which the deflecting members are adjusted to regulate thepassage of cinders and products of combustion through the stack.

Referring now to the drawings A represents a boiler of conventionaltype, and B the smokestack therefor, the arrester being I arrangedbetween two sections of and formsupplemental or return passages 15, area.

pair of rectangular plates 16, said plates being secured to theconverging portions 12 of opposing walls of the housing, and beingprovided with a plurality of transverse openings 17 adapted to establishcommunication between said draft/and return passages. Disposed withinthe passage 14 thus formed, and having their inner ends arranged inspaced overlapping relation and hingedly supported on the rods 18, aresets of oppositely directed deflecting screens 19, each set of screensbeing hingedly connected together by means of the links 20 and beingformed on their free ends with right angular flanges 0r projections 21adapted to nor mally lie within the slots 17 in the plates 16 for thepurpose of directing the larger sparks and cinders into the supplementalpassage 15, from which they are conveyed to the ashpit, or firebox bymeans of the return pipes 22. The deflecting screens 19 are furtherformed with openings 23, through which the smaller sparks, cinders andother products of combustion are permiated to pass and escape to theatmosphere.

, apparent that when the lever 2a is operated,

by means of the pull cable 26 the deflectors 19 are swungsimultaneouslyon the rods 18,

and toward or away from the plates 16, the flanges 21 moving freelywithin the openings 1'? in the plates, thereby increasing or decreasingthe size of said openings and regulating the passage of sparks andcinders into the passage 15 and through the openings 23 in thedeflectors,

If it be desired, the deflectors 19- may be swung clear of the plates16, as shown in dotted lines in Fig. 1 thus permitting m impeded passageof the cinders and other products of combustion through the stack andinto the atmosphere.

What is claimed is: I

A spark arrester comprising a housing adapted for application to a smokestack, plates arranged within and dividing said housing into .a mainpassage and supplemental passages, said plates being provided withopenings for establishing communicw tion between saidmail'ixandfisupplemeiital passages, and deflectorsadjustably'mounted 15the main passage to exteirid-to or through said openings, and vdeflectthesparks and cinders in the main passage, through said opening and-intothe supplemental passages.

In testimony whereof, I afiix my signa- 20 ture, in the presence of twowitnesses.

SAMUEL Witnesses: J. SWIFT, Y A. J. SWIFT.

